Stenciling machine



May 4 1926. f w J. E. SHAVER: JR I srsncmue momma Filed May 26. 1923 I s Sheets-Sheet 1 hvewfor:

Alva/we May 4 1926. 1,583,612

J. E; SHAVER. JR

STENCIL]: NG MACHI NE Filed ma 2 1925 I a Sheets-Sheet 2 May 4,'192e. 1,583,612

- .1. E. SHAVER, JR

STENCILING MACHINE Ffiled May 6, 1923 3 Sheets-Sheet 5 I 1 1 1 1 1 1 l 1 1 F 1 l 1 v 1 Patented May 4, 1926.

e t m erfimmtrm 'woon TYPEWRITER COMPANY, OF NEW WARE.

YORK, n. Y., AcoRroRArIon or blind:

s' rhiteninte lvrAelm A pncatww med m as, 1921;.

To all whom it may concave: I

Be it known that IfJ'AhlFiS E. Srmvnnrdn, a citizen er the United States, residing in Philadelphia, in' the count-y of Philadelphia: and State of Pennsylvania, have invented certain; new and useful Improvements in Stenciling-H-achiiies, of which the follhwiirg is a specification. r 1

This iiwention relates to dupliha-tfin'gnzte chines in which a: perforated hollow cylin der or driun is'covered with an ink-blanket and a stencil-sheet is laid upon the'hlanltet;

the paper to be st'enciled'heiiig" run hetweenthe stencil sheet and pressure roll; thevink being applied to the interior of he cylinder and taken up by the in r-hlan'kefi u'poh the exterior thereof.

Among the olojectsof the ihvent ion-are to provide an improved stop-mechanism for temporarily arresting the cylinder at the end' of each complete revolution, to provide means movable on the cylinder to indicate the depth of the top margin on the printed sheet, to provide the frame with permanentattached supply and delivery ta-hles;

which may he foldedin' a small space when not in use, to provide 111621113011 the supply table for accurately gaging the side e'dfges of the work-sheet pile, to provide means to? prevent the'inlr applied to the interior of the cylinder from working out over the edges thereof, and to provide an improved construction for the rdllenhezirings on which the end of the cylinder rotates.

According to one feature of the invention, the cylinder may be provided with a'pai-r of lugs adjustable along the rim thereof, which co-operate with abell-crank leyer mounted on the frame of-tlle machine, to cause the movement of the cylinder to be stopped at theend of each rev-olutiornehd to check the recoil thereof so that the'sheets'to he print: ed' may be started through the machine in proper relation to the'stencil-sheet;

Another feature of the device resides inprovidingthe handle upon w'liichthe stops are mounted with a SCtrlQQhOYQblG along the" cylinder when the handle and stops are ad jus'tod, to indicate, at a glance, thedepth of tom of the supply table.

Serial" no: 041,533;

the top marginwhich will be formed on the printed sheet. Y4 is Heretofore; 1 in machines of this kind; the

' supply and delivery tables have heendetachably inouhtedon the frameof-thejniachine;

within-01116 cases,-becan e lost- 01" misplaced when detached from the frame of then w chine. Iti is a feature of this invention that the supply and delivery table'sf are -per1na-' nent-ly attached to'the frameaof the machine,

'iandpivoted in such a way that they maybe folded upwarflly, toward the stenfci1 cy-lin de'r, so es to fit within the cover of the has? 'chinel The" supply table has pivoted to t-he underneath side thereof apair of brackets whlclr support the table against thefraine whenin effective positiom'a'nd, when thesUpply table is swungupwardly toward the cylmden-these brackets swing inwardly on; the bot their pivots. andifit closely against Another feature of the ihyention; resides in the provision of improved, side-edge gagefor accurately'g-agingithe edges of the .woresheet; One important feature of this gage resides in? the abrupt rig=l1t=angular cor- .ne-r, whichreplaces the rounded corner in em;

games, and prevents the side; edges of the work-sheets 'froiirridingup the-1 side of isting the gage. r a

i i-nether feature of the invention isthe provision of ribs upon the interior of the cylinder which prevent the ink-appliedthereto from-spreading to the outer edge or the cylinder.

prevent the accumulation of ink therein.

vAccording to another feature of then-inseer-Termite, lissr eito'nq 7110f iiiisit The corners between these ribs. and the cylinder-walls lnayhe mundedto heldin unitary assembly by a retaining] flange carried by the'riin;

Other features and advantages will here inaft-er appear. r t

In} the accompanying: d'raw1ngs Figure 1- is' :r side'elevation of the machine with certain parts shown" in section;-

Figure 2 1s a perspective View of the ad-- justable handle and scale, showing a section of the cylinder upon which they are mounted in the assembled machine.

Figure 3 is a sectional view of the handle and scale mounted on the cylinder.

Figure 4 is a longitudinal cross-section.

Figure 5 is a side elevation, showing the position of the supply and delivery tables when the cover is on the machine.

Figure 6 is a plan view of the supply table and side-edge gage.

Figure 7 is a section of the supply table, showing the pivoted supporting brackets.

Figure 8 is a bottom plan view of the brackets swung inwardly against the supply table.

' Figures 9, 10 and 11 show the stopn1echanism at different positions in its operation.

Figure 12 is a cross-section of the roller for supporting the cylinder.

In the embodiment illustrated, the base 1 is provided with end frames 2 and 3, one of whiehcarries a trunnion l upon which one end of the stencil-cylinder 5 revolves, the other end of the cylinder being supported in the yoke-shaped frame 2 and revolving on trundles 6, 7 and 8 held in this frame. The cylinder 5 is provided with an adjustable handle 9 locked to the cylinder-rim 10 by set-screws 11 and projections 12 and 13 which slidably ride in grooves 14 on the cylinder. A fiber pad 10, inserted between the handle 9 and the rim 10, holds the handle firmly when the set-screws are set and reduces the strain upon lugs 12 and 13. Upon the handle-bracket are mounted two lugs 15 and 16 which co-operate wlth a bellcrank lever 17 pivoted upon the frame to cause the movement of the cylinder to be arrested at the end of each complete revolution for the introduction of a work-sheet.

In operation, the forward lug 15 slides over the arm 18 of the bell-crank lever and forces this arm downwardly, which elevates the arm 19 of the bell-crank lever and throws it into the path of the lug 16, so as to stop the motion of the cylinder. The operator then imparts a slight reverse movement to the cylinder, whereupon the spring 20 draws the bell-crank downwardly against the stop 21 to release the rear lug 16 for further forward rotation, and at the same time the arm 18 of the bell-crank lever is elevated, so as to contact with the rear of the front lug 15 and limit the reverse movement of the cylinder. This is the position of parts illustrated in Figure 9. In order to release the stencil-sheet from the cylinder, it may be desirable, at this stage of the operation, to move the handle further in a reverse direction, that is, to the left as viewed in Figure 9. To accomplish this, the operator lifts the finger-piece 19 on the bell-crank and withdraws the arm 18 from the path of the lug 15, thus freeing the cylinder for reverse .movement. The position of the handle and lugs, therefore, determines the position of the cylinder when the worksheet is introduced, and hence determines the depth of the mar gin which will be formed at the top of the printed sheet.

The depth of this margin is equal to the space between the handle and the top of the stencil-sheet, and means are provided for readily measuring this space consisting of a graduated scale 22 attachedto the handle 9 and adjustable therewith around the cylinder, the scale indicating to the operator, at a glance, the distance in inches, or other convenient measuring units, which the handle is spaced from the top of the stencil-sheet. One end of the scale is attached to the handle by means of lugs 23, and the opposite end of the scale is held upon the cylinder by the bracket 24 attached to segment 25 which is fixed to the handle and moves around the cylinder-rim 10 therewith. The cylinder may be provided with a groove 26 for the scale 22 to slide in.

The supply table 27, which is provided with an extensible top 28, is pivoted to the frame at 29, and is adapted to swing upwardly against the cylinder, as illustrated in Figure 5. The top 28 slides on guides 29 which are secured to flanges 30 on the supply table 27. A pair of brackets 30 are pivoted at 31 to the guides 29, and, in its working position, the edges 32 of the brackets rest against the frame of the duplicator, to rigidly support the supply table. When the supply table is folded upwardly against the cylinder, these brackets swing inwardly upon their pivots and fit closely against the underneath side of the supply table, as illustrated in Figure 8. The delivery table 33, also provided with an extensible top 34, is pivoted to the frame in a similar manner at 35, and can also be swung upwardly toward the stencil-cylinder, so as to lit within the cover of the machine. This arrangement secures the delivery table and the supply table permanently to the frame of the machine, so that there is no danger of them becoming misplaced, as often happens with the detachably connected supply and delivery tables of the prior.machines.

Mounted on the top of the supply table is a side-edge gage which consists of an angle-bar 36, to the rear of which are attached two parallel brackets 37 provided with saw-toothed slots 38 therein. A pair of set-screws 39 eo-operate with the sawteeth in the slots in the brackets to secure the gage firmly on the table in any of its adjusted positions, and since the saw teeth are in registry the two brackets secure parallel adjustment of the side edges of the gage. In adjusting the gage registering teeth are brought into engagement with the set-screws 39 and as the edge of the gage is esteem parallel to the registering te'eth, it' is also parallel to the sides of the table 27 and to the direction in which the copy-sheets are fed to the cylinder. The sharp corner in the angle of the gage, replacing the rounded corners in the present gages, prevents the side edges of the woi'k-sheetfrom'riding up the side of the gage and working out of alignment. I 5 I Y The interior of the cylinder is provided with inwardly-extending V ribs .40 at the margin of its printing surface, which prevent the ink applied to the interior of the cylinder from working out over the ends thereof. The corners'hetween the r'ihs'and' the cylinders areround'e-d at ll, so as to facilitate cleaning of the machine and prevent the accumulation of ink at these points. A detail sectional view of my improved baTll 'beai ing" rollei, appeering in Figure 4,

forsnpporting the outer rim of thecylinder for rotation is shown in Figure. '12. Ac-' cording tothe embodiment shown, a fixed v member 41 is mounted on a stud 43 at tached to the frame 2 of 'the maeliine,'and provides a" hall-race 44 for the halls 455 of the trundleror roller 17 The rim of the roller is provided with an integral fiange 436*. extending inwardly over aflaII'g'e lE) of the fixed member. and the opposite side of the rim is turned inwardly at 4:7 to hold a retaining ring 48 which revolves with" the rim and holds the halls and fixed member assemhl-edin the'rim, thus providing a' unitary hearing The ti'ii'nclles or rollers 6 and 8 may also be of the above-described character ii": desired. By this construction" the rim of the roller is widened soas'to provide a broader bearing-surface for the cylinder,

andtheinounting of the rollers on the frame is simplified A soft rubber roll 5 O is pressed upwardly 'against the steneilacylinder by arms 51 actinp; under tlie infinence 0T" cam 52 fined on the movable shaft 53, the pressure being justahle to secure propercontact between the stencil-sheet am ne paper. A brake 54, p'ulle'd" downwardlyby spring 55, provi-ded to hold the cylinder, from rotation when the machine is not inuse', the cam 56 on shaft 58 acting to release the hra'ke when" the roll 50 is elevated. v

Variations may be resorted to within the scope oi the invention, and portions of the improvements may he used without others.

Having thus described my invention, I claim:

1. In (i-duplicating machine, the combination with a revoluhle cylinder, of an escapement mechanism con'iprising a pair of lugs mounted on the cylinder, means actuated by one lug to place an obstructionin the path of the other lug to arrest the movement of the cylinder, means to adjust the lugs around the cylinder to determine the point to be stopped, and'a scaleadjustahle, around the" cylinder with the lugs/t0 indicate the distance between the stopping point and the top of the stencil-sheet.

2. In a duphcating machine, the coinbina tion with a revoluhle' cylinder, 7 of an escape meiit niechanism' comprising a .pair of lugs stopped, and a scale adjustable around the cylinder with thelugs to indicate the depth of top margin which will be formed on the printe d sheet. v

3. Ina duplicatingmachine, the c0mloina' tion with a revoluble cylinder, of a handle adjustable around the rim thereof, a' pair 01" lugs"gmountecl on the handle, means ac tuatedih one leg; to project an obstruction intothe path of the other lug to arrest the movement of the cylinder, and a scale at tached to the handle and adjustable around the cylinder to indicate the depth of top margin Whieh will he formed on the printed 4 In -a" duplicatingmachine, a revoluhle cylinder, means to stop the cylinder a't the end of each complete revolntion in' position fora work-sheettobe fed into the machine,

ed sheet, adjusta'ble'means to vary the stopping point around the cylinder to change said top margin, and a scaleon the cylinder movahle'witn the ad uStabEe means to indi cate the depth of top margin which will be formed on the worl'esheet.

6. In a duplicatingmae'hine,'-'a revoluble cylinder, a stencil sheet thereon, a'liandle adjustable around the" cylinder, and a scale" m'ovahle with the handleto indicate the distance from the handle to the top of thest en cil-fshee't'; p

7. In a duplicating machine, a revolub'lfi cylinder, a stencil-sheet thereon, a handle adjustable around the cylinder, and an arch I ate scale'attached to the handle and slidalolej around the cylinder toindicate the distance from the handle to the top or the stencilsheet. i I I 8. In" a duplicating machine, a revoluble cylinder, aste'ncil s'heet thereon, a" handle ad'- justable around the cylinder, and an arcuate scale attached to the handle and slidahle around the cylinder to indicate the distance from the handle to the top of the stencilsheet, said cylinderhzwing a groove therein to receive said scale.

9. In a duplicating machine, the combination of a revoluble cylinder, a handle adjustable around'the-rimthereof, lugs to hold the handle on the rim, means to lock the handle in adjusted position, and a compressible pad between the locking means and the cylinder rim to reduce the strain on the holding lugs.

10. In a duplicating machine, the combination of a frame, a work-cylinder revolubly mounted thereon, and a supply table for feeding work to said cylinder, including a main section pivoted to said frame, longitudinal flanges on said main section, a pair of longitudinal guides extending parallel to the face of said main section, an auxiliary section mounted to slide in said guides and movable from an extended horizontal posi tion wherein it adds to the area of said main table to a collapsed position alongside said main section, and swing-able upwardly with the main section about its pivot point to an upright position alongside said cylinder and within a cover for said machine, and bracketspivoted to said guides, engageable with said frame and foldable inwardly to a position adjacent said table.

11. In a duplicating machine having awork-cylinder, the combination with a main frame, of foldable and compactible workfeeding and work-receiving tables pivoted to the sides of said frame, in positions to fold up upon opposite sides of said cylinder, each of said tables including both a main portion and a portion which is retractable relatively thereto, each main portion swingable up, together with its said retractable portion, into an upper or collapsed position alongside the cylinder, to bring the free end of the main portion adjacent the level of the top of the cylinder, each retractable portion being movable to a position substantially within the contour of its main portion in its folded-up position, to compact the tables within'a cover of a size substantially fitting over the cylinder and frame. 7

12. In a duplicating machine, the combination of a revoluble stencil-cylinder, a frame having upwardly-extending portions for supporting said cylinder for rotation, one of said portions being of yoke-shape, and supply and delivery tables, on opposite sides of said cylinder, extending inwardly between the upwardly-extending frame-portions and pivoted thereto for movement upwardly to positions alongside said cylinder and within a cover for said machine.

13. The combination with a duplicator, of an extensible supply table pivoted to the frame thereof, and brackets pivoted to the underneath side of the supply table to provide a substantial support for said table when extended in horizontal position, said brackets arranged to fold inwardly against the underneath side of the supply table, the latter being swingable upwardly from its horizontal position and collapsible to fit within the cover of the machine.

14. Thecombination with a duplicating machine, of an extensible supply table pivoted to the frame thereof, and triangular brackets pivoted to the underneath side of the supply table to provide a substantial support for said table against the frame of the duplicator when said table is extended in horizontal position, said brackets arranged to fold inwardly against the underneath side of the supply table, the latter being swingable upwardly from horizontal position and collapsible so as to fit within the cover of the machine when not in use.

15. The combination with the supply table of a duplicating machine, of an ad ustable side-edge gage for work-sheets, said' gage including a sheet-guiding member, a pair of brackets provided with saw-toothed slots at the rear of said member, and a pair of set-screws in the slots and engaging the saw-toothed edges to hold said member in position on the table, the teeth of said slots being arranged in pairs on lines parallel to the sheet-guiding member to dispose the guiding member parallel with the direction in which the work-sheets are fed into the machine.

16. In a duplicating machine, the combination of a frame, a stencil-cylinder revolubly supported thereon, a fixed table on said frame, a supply table pivoted on said frame and movable from a position level with said fixed table wherein it co-operates with said fixed table to feed copy-sheets to said cylinder, to an elevated position alongside said cylinder,'and a side gage for said copysheets, extending over said fixed table and said supply table when the latter is level with the former and detachably secured to the latter. i

17. In a duplicating machine, the combination of a perforated ink-carrying stencilcylinder, and annular ribs on the interior of said cylinder to prevent the ink working out over the edges thereof.

18. In a duplicating machine, the combi nation of a revolving cylinder, and annular ribs on the interior of the cylinder to prevent the ink working out over the edges thereof, the corners formed by the ribs and the cylinder being rounded to prevent the accumulation of ink therein. I

19. In a duplicating machine, the combination of a revolving stencil-cylinder, and

annular ribs on the interior thereof for both strengthening the cylinder and preventing ink applied to the interior thereof from working out over the edges.

20. In a duplicating machine, the combination of a frame, a stencil-cylinder Within the frame, and ball-bearing rollers upon Which the cylinder revolves, each roller including a fixed member having a ball-race and a rim revolving therea-round, the rim of each roller being of greater Width than the fixed member thereof.

21. In a duplicating machine, the-combination of a frame, a stencil-cylinder Within the frame, ball-bearing rollers upon which the cylinder revolves, each roller including a fixed member having a ball-race, a stud pro ecting from the frame to support each fixed member, an annular flange extending inwardly beyond the edge of said fixed memher, balls mounted in the ball-race, a rim revolving upon said balls, said rim being of greater Width than said fixed member, and a retaining ring for the balls carried by and revolving with the rim.

22. In a duplicating machine, the combi nation of a revolving stencil-cylinder, and annular ribs on the interior thereof bordering the printing-field for preventing ink applied to the interior thereof from Working out over the'edges, one of said ribs having inwardly-extending arms rigid With each other forsupporting said cylinder.

JAMES E. SHAVER, JR. 

